wyrażenie do najprostszej postaci i oblicz ich wartości dla:
1) a = - 3,
b = - 1
14 - 2 (5 - 2a) - 4b + 3 (b - 3a) = ?

2) x = 2,
y = - 2
7y - 5 (3 - 3x) + 3 (6 - 7x) - 9y = ?

3) m = 0,
n = - 4
- 3 (2-3n) - 5m + 4 (3 - 2n) + 8m = ?

4) a = 3,
b = 2
7a + 5 - 2a + 4b - 3 = ?

5) x = 1,
y = 4
5x + 6 + 3y - 2x + 1 - 2y = ?

6) m = 2,
n =
[tex]2 \frac{1}{2} [/tex]


m + 3 - 4n + 5m - 2 = ?

7) e =
[tex]1 \frac{2}{3} [/tex]
, f = 3
10 - 6e + 4f + 2 - 3f = ?

8) k =
[tex]1\frac{2}{5} [/tex]
l = 1
12k + 7l - 7k + 4 - 6l = ?
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